Characteristics of 1.8 TSI engines (2nd generation)
| Characteristics | Value |
|---|---|
| Manufacturing | Volkswagen |
| Engine brand | EA888 2nd generation |
| Years of production | 2008-2015 |
| Cylinder Block Material | Cast iron |
| Power system | Direct injection |
| Type | Ready |
| Number of cylinders | 4 |
| Valves per cylinder | 4 |
| Piston stroke, mm | 84.2 |
| Cylinder diameter, mm | 82.5 |
| Compression ratio | 9.6 |
| Engine displacement, cc | 1798 |
| Engine power, hp/rpm | 120/3650-6200, 152/4300-6200, 160/4500-6200 |
| Torque, Nm/rpm | 230/1500-3650, 250/1500-4200, 250/1500-4200 |
| Fuel | 95 |
| Environmental standards | Euro 5 |
| Engine weight, kg | – |
| Fuel consumption, l/100 km (city / highway / mixed for Octavia A5) | 9.1/5.4/6.6 |
| Oil consumption, gr./1000 km | About 500 |
| Engine oil | 0W-30, 0W-40, 5W-30, 5W-40 |
| How much oil in the engine, liters | 4.6 |
| Oil change is carried out, km | 15000 (better 7500) |
| The operating temperature of the engine, deg. | – |
| Engine life, thousand kilometers | Factory data: -, In practice: ~100 |
| Tuning, h.p. | Potential: 350+, Without loss of resource: ~250 |
| Motor installed | Volkswagen Golf 6, VW Passat B6/B7, VW Passat CC, Audi A3, Audi A4, Audi A5, Skoda Octavia, Skoda Superb, Skoda Yeti, Audi TT, SEAT Altea, SEAT Eveo, SEAT Leon, SEAT Toledo |
Reliability, problems and repairs of 1.8 TSI engines (2nd generation)
The second generation EA888 appeared in 2008 and the most popular 1.8-liter representative was the CDAB engine, besides it there were CDAA, CDHA and CDHB. These engines replaced BZB, CABA, CABD and CABB, i.e. the whole series EA888 of the 1st generation.
The new engines are differently honed cylinders, reduced the diameter of the crankshaft main journals to 52 mm (was 58 mm), put new pistons with new rings (about which much is written in the section “Problems”), installed a new vacuum pump, used adjustable oil pump, instead of 1 lambda-probe, here installed 2 pcs. The engine now complies with Euro-5 emission standards.
Otherwise, everything remained without significant changes, but even this was enough to significantly change the reliability of the design.
The two most popular engines were CDAB and CDAA, which differ from each other by firmware.
Power of CDAB 152 hp at 4300-6200 rpm, torque 250 Nm at 1500-4200 rpm.
Power CDAA 160 hp at 4500-6200 rpm, torque is the same.
CDH engine was produced, which had versions CDHB and CDHA and was used in Audi A4, A5 and SEAT Exeo. CDHB engine was an analog of CDAA. The CDHA engine is an analog of CABA, but already of the 2nd generation with all the innovations, where the turbine is needed only for a significant increase in torque. Its power is only 120 hp at 3650-6200 rpm, and torque is 230 Nm at 1500-3650 rpm.
In parallel, a larger version was produced – 2.0 TSI 2nd generation, which we write about right here.
The production of 1.8 TSI 2nd generation continued until 2015, and already from 2013 they began to be replaced by the new 1.8 TSI 3rd generation.
Disadvantages and problems of CDAB engines
1. Oil consumption
High oil consumption is the most known problem of the 2nd generation 1.8 TSI and it all happens because of the special design of the piston rings, which are very thin and have too small drainage holes. The disease manifests itself at about 50 thousand km and rapidly progresses, already by 100 thousand oil consumption can reach several liters per 1000 km, after which you are sent for overhaul.
What to do in this case: for engines manufactured before 05.2011 (inclusive), change the pistons to BZB-ish, it is Kolbenschmidt 40251600 (21 fingers). For newer engines Kolbenschmidt 40761600 (23 pin) pistons are suitable. Here it is important to understand the condition of the cylinders, it may be necessary to bore them and then repair pistons are needed. The last two digits of the pistons of the repair size 00 are changed to 01 or 02, depending on the size. The oil injectors are changed along with the pistons.
At the very end of 2011, the problem of oil consumption was solved.
The oil separator can also cause oil consumption, which should be replaced with 06H103495AD or 06H103495AC.
2. Stretching of the timing chain
This happens after 100 thousand kilometers, closer to 150 thousand kilometers, which will be notified by extraneous noise. There is only one way out – replacement of the chain together with the tensioner for the same new model.
3. Floating revs
Because of the huge oil consumption, it gets on the plugs and wherever else it can, which causes unstable operation of the motor. Most likely, when disassembling it will be found that there are all in oil deposits, valves in soot and all this should be put in order every 50 thousand kilometers.
In addition, because of the fuel injector, can begin to get gasoline in the oil, it can be checked by the smell on the dipstick. This leads to the replacement of the TNVD assembly.
You can prolong the life of this motor if you change oil not once in 15000 km (as recommended), but every 5000-7500 km, use only the best quality oil, drive most of the time on the highway and do not get into traffic jams, refuse short trips, do not drive at too low speeds…..
The best option is to refuse to buy a car with such a motor.
Tuning of engines 1.8 TSI (2 generation)
Chip tuning
These motors easily show around 220-225 hp on Stage 1 ECU firmware alone. With cold intake, large front intercooler, downpipe and Stage 2 firmware you can get about 250 hp. This is not a bad result, especially for the 120 hp version, but if you want even more, then you need to go to the turbine K04.
Turbo kit based on K04 will give up to 350 hp, but the motor will not go up to 2300-2500 rpm. Such a kit needs new plugs, coils from S3, good exhaust on 76mm pipe, big intercooler, appropriate ECU tuning.
MOTOR RATING: 3-